Improvement in apparatus for cooling and removing blast-furnace slag



2 Sheet s-Sheet I.

,g Blast-Furnace Slag.

.Patented July 15, 1873.

. In pnoro-mwosRAPH/c (:0. M)? (mam/E19 macsss) Z Sheets- -Sheet 2. A. KLOMAN. Apparatus for Cooling and Removin.

Blast-Furnace Slag.

Patented July 15 AM. PHOTD-LITIIOGEAP/IIC ca u.(os50mvs's moms) I ANDREW KLUMAN, OF PITTSBURG, PENNSYLVANIA.

IMPROVEMENT IN APPARATUS FOR COOLI NG AND REMOVING BLAST-FURNACE SLAG.

Specification forming part of Letters Patent No. 1&,927, dated July 15, 1873; application filed June 16, 1873.

To all whom it may concern:

Be it known that 1, ANDREW KLOMAN, of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Apparatus for Cooling and Removing Blast-Furnace Slag; and I do hereby declare the following to be a full, clear, and exact description thereof, reference being had to the accompanying draw ings, in two sheets, making a part of this spec ification, in which- Figure 1, Sheet 1, is a top or plan view.

Fig. 2, Sheet 2, is a vertical sectional view of my improved apparatus. Fig. 3 is a top or plan view of a section of the same, showing one of the pans, two of the caps, and the connectin g frame-work; and Fig. 4 is a sectional view through as a: of Fig. 3.

Like lettersof reference indicate like parts in each.

In the operation of blast or smelting furnaces it is desirable to get rid of the slag or cinder, which is comparatively a waste article, in as cheap and expeditious a manner as possible. Ordinarily it is run off into a cast-iron pan or box, till the same is full, and then into another which is substituted for the first; and, by means of a crane, these boxes, filled with solidified cinder, are loaded onto a cart or truck and removed.

In order to facilitate this operation, and more completely effect it, I have devised an apparatus which consists substantially of an annular water-trough with supply and waste pipes or passages, in which trough, by suitable appliances, I cause the rotation of a series of pans or boxes, smaller at the bottom than at the top, for receiving, as they are successively brought under the' spout, the molten slag or cinder from the furnace. These boxes or pans are flanged at their upper ends so as to rest on a rotating frame; and the joints between one box and the next are covered by caps, which keep the molten cinder from getting into the joints. I also arrange in each pan a lifting-pin, which is largest at the lower end, and has an eye at the upper end, by means of which a connection is made from the crane, and the block of solidified cinder can be removed or hoisted out of the pan and loaded onto a cart or truck for removal. This lifting-pin, being largest at the lower end, can then be knocked out from above and reused as before.

To enable others skilled in the art to make and use my improved apparatus, I will proceed to describe its construction and mode of operation.

The annular trough is represented at A, the sides a of which project upward so as to contain water of the desired depth, which water is supplied by a pipe, 0, preferably arranged to discharge into the trough A in the direction of the rotation of the pans yet to be described, and the excess or overflow of water escapes at the waste-pipe c at or near the up per edge of the trough A. The water thus introduced is for the purpose of keeping the pans cool, and solidifying the cinder therein as rapidly as possible. \Vithin and without the vertical sides a, and in suitable supports, are a series of rollers, c, on which rests the ro' tati n g frame B. This frame consists substantially of the inner and outer rings, as shown, and of radial arms B which extend out from the central hub B and which receive further support by means of the braces or rods B which connect at their upper ends with a hollow spindle arranged on a vertical post, 13*. The rings B and the radial arms B divide up the outer part of the frame into a series of openings, in each one of which a pan or box, I), is arranged, and wherein it is supported by means of a flange, d, around its upper outer edge, which flange rests upon the rings B or radial arms B or both, as may be desired, and the pans or boxes D are held in place by means of T-heads d, as shown in Fig. 3. The pans or boxes I) are made smaller at the bottom than at the top, in order that the solidified cinder therein may more readily be removed. In the bottom of each pan, at or about its center, I flx a screw-head or other small projection, s, as a centering device for the lift ing-pins b, which pins are made larger at the lower end, with an eye, 8, at the upper end, or other suitable means for making connection therewith, and with a recess in the lower end, as shown, by means of which they are centered or seated on the bottoms of the boxes and over the projections s. The flanges d and those parts of the radial arms B 011 which they rest are covered by means of caps n, preferably of inverted V or U shape, so that the molten cinder cannot get into thejoiuts of the boxes and arms. The frame-workB B constituting what is commonly called a spider and carrying the boxes D immersed in water at their lower ends, is caused to rotate by means of any suitable crank and gearing device, as shown at 11, so as to bring each box D under the deliveryspout h leading from the tap-hole of the blastfurnace. As soon as one box, d, is full the liftingpin b, having been previously arranged therein, the workman rotates the spider until the next box D comes under the spout h, and so on till the cinder is all run off. As soon as the cinder in a full box has become solid the hoistiughook or other device of the hoisting crane is connected with the upper end of the pin 1 and the block of cinder is removed, the pin 1) is driven out from above, replaced, and the pan is again ready. If it is necessary or desirable to lift out the pans D it can be done by sliding the caps n upward on the rods or braces 13 till they are out of the way, and then the boxes D can be removed and replaced or renewed at pleasure, and the caps 02 again placed in position. Other suit-able stop de vice may be substituted for the T-heads d and the center projections 8 may be made on the lower ends of the lifting-pins b and the recesses in the bottom of the boxes D.

The usefulness of this apparatus will be obvious to those who are aware from experience of the trouble and difliculty encountered in re moving cinder or slag in considerable quantities just at the moment when the molten iron is ready to be run off.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. As a step in the removing of blast-furnace slag or cinder, running the same ofi' into boxes which are partially or wholly immersed in water, substantially as described.

2. In combination with an annular Waterpan, A, a series of boxes, D, suitably arranged to be rotated successively under the spout leading from the tap-hole of the blastfurnace, substantially as set forth.

3. In combination with a slag-receiving box, a lifting-pin, 1), largest at its lower end and having an eye or equivalent connecting device at its upper end, substantially as set forth.

4. A centering pin or projection and a recess corresponding thereto, one arranged in the bottom of each box D and the other on the bottom of each lifting-pin 11, substantially as set forth.

5. The combination of the trough A, spider B 13 the boxes D, and caps n, arranged substantially as described.

6. The combination of the annular rings B, boxes D, and T-heads d, or other suitable stop device in lieu thereof, substantially as described.

In testimony whereof I, the said ANDREW KLOMAN, have hereunto set my hand.

ANDREW KLOMAN.

Witnesses:

T. B. KERR, G. H. UHRISTY. 

